A study of two phase detonation as it relates to rocket motor combustion instability

Two-phase detonation in rocket motor combustion instability - production of monodisperse spray

A critical perspective on stigma in physiotherapy: the example of weight stigma

"Manipulating practices is the first ever collection of critical physiotherapy studies and comes at a time of unprecedented change in the profession. Written as a collaboration between 20 authors, many members of the Critical Physiotherapy Network (CPN), the book uncovers the growing body of critical thinking now emerging in physiotherapy. From topics as diverse as 21st century education, ethics, evidence-based practice, touch, and equine therapy; and approaches as varied as disability and performance studies, feminism, logic, narrative theory, new materialism, and phenomenology, the book explores ways of thinking ‘otherwise’ about physiotherapy. Over 16 chapters written by authors from six different countries, Manipulating practices offers insights from some of physiotherapy’s most radical thinkers. The book is also an innovative venture into open source publishing, making it entirely free to download and read. In keeping with the objectives of the CPN, the chapters expose a range of concepts, ideas and practices to critical scrutiny, and reflect the profession’s growing interest in critiquing taken-for-granted ways of practicing and thinking. Manipulating practices will be of interest to clinicians, lecturers, policy-makers, researchers and students, and will provide new impetus to help physiotherapists imagine how the profession might grow and develop into the future.""«Manipulating practices» er den første vitenskapelige antologien som samler kritiske studier innen fysioterapi, og lanseres i en tid der profesjonen er preget av store forandringer. Antologien representerer et samarbeidsprosjekt mellom 20 forskere, hvor majoriteten er medlemmer av Critical Physiotherapy Network (CNP) – et internasjonalt nettverk av forskere og klinikere fra hele verden. Antologien synliggjør den økende tendensen til kritisk tenkning som er i ferd med å vokse frem innenfor fysioterapi. Gjennom å fokusere på varierte tema som utdanning, etikk, evidensbasert praksis, berøring og terapiridning, samt en bred tilnærming som inkluderer funksjonshemming, performance-studier, feminisme, logikk, narrativ teori, ny materialisme og fenomenologi, utforsker antologien nye og annerledes tanker om fysioterapi som fag og profesjon. Antologiens 16 kapitler er skrevet av forskere fra seks ulike land og gir innsikt i forskningen til noen av de mest radikale forskerne i det internasjonale fysioterapimiljøet. Boken er også innovativ gjennom at den publiseres som open access, hvilket betyr at den kan lastes ned og leses gratis og dermed gjøres allment tilgjengelig. I tråd med ambisjonen for CPN, utforskes en rekke ulike begreper, ideer og praktiske tilnærminger relatert til kritisk tenkning innenfor fysioterapi. Slik gjenspeiles også profesjonens økende interesse for å kritisere etablerte måter å praktisere og tenke på, som tidligere har vært tatt for gitt. «Manipulating practices» vil være av interesse for forskere, klinikere, forelesere, politikere og studenter. Antologien vil forhåpentligvis bidra med nye impulser med henblikk på hvordan fysioterapiprofesjonen vil vokse og utvikle seg fremover.

Handedness, Health and Cognitive Development: Evidence from Children in the NLSY

Using data from the US National Longitudinal Survey of Youth, and fitting family fixed-effects models of child health and cognitive development, we test if left-handed children do significantly worse than their right-handed counterparts. The health measures cover both physical and mental health, and the cognitive development test scores span (1) Memory, (2) Vocabulary, (3) Mathematics, (4) Reading and (5) Comprehension. We find that while left-handed children have a significantly higher probability of suffering an injury needing medical attention, there is no difference in their experience of illness or poor mental health. We also find that left-handed children have significantly lower cognitive development test scores than right-handed children for all areas of development with the exception of reading. Moreover, the left-handedness disadvantage is larger for boys than girls, and remains roughly constant as children grow older for most outcomes. We also find that the probability of a child being left-handed is not related to the socioeconomic characteristics of the family, such as income or maternal education. All these results tend to support a difference in brain functioning or neurological explanation for handedness differentials rather than one based on left-handed children living in a right-handed world.handedness, children, health, cognitive development, family fixed-effects

Letter from the Ritz-Carlton to Robert Goelet

https://digitalcommons.salve.edu/goelet-personal-expenses/1232/thumbnail.jp

Smart overlay coatings - concept and practice

Smart overlay coatings are a functionally gradient coating system designed to provide high temperature corrosion protection over a wide range of operating conditions. The SMARTCOAT design consists of a MCrAlY base, enriched first in chromium, then aluminium to provide a chemically graded structure. At elevated temperatures, above 900°C (1650°F), the coating oxidises to form a protective alumina scale. However, at lower temperatures this alumina scale does not reform rapidly enough to confer protection under type II hot corrosion conditions. The coating is therefore designed with an intermediate chromium-rich interlayer, which permits the rapid formation of chromia healing areas of type II corrosion damage. Laboratory and burner rig tests have been carried out on a series of developmental smart overlay coatings. These have shown that the development of an intermediate chromium-rich phase provides protection under low temperature hot corrosion conditions, while the aluminium-rich surface layer provides resistance to high temperature oxidation and type I hot corrosion. Thus, the single application of SMARTCOAT permits operation over a broad range of industrial and marine turbine conditio

Observed vulnerability of Filchner-Ronne Ice Shelf to wind-driven inflow of warm deep water

The average rate of melting at the base of the large Filchner-Ronne Ice Shelf in the southern Weddell Sea is currently low, but projected to increase dramatically within the next century. In a model study, melt rates increase as changing ice conditions cause a redirection of a coastal current, bringing warm water of open ocean origin through the Filchner Depression and into the Filchner Ice Shelf cavity. Here we present observations from near Filchner Ice Shelf and from the Filchner Depression, which show that pulses of warm water already arrive as far south as the ice front. This southward heat transport follows the eastern flank of the Filchner Depression and is found to be directly linked to the strength of a wind-driven coastal current. Our observations emphasize the potential sensitivity of Filchner-Ronne Ice Shelf melt rates to changes in wind forcing

Sea breeze: Induced mesoscale systems and severe weather

Sea-breeze-deep convective interactions over the Florida peninsula were investigated using a cloud/mesoscale numerical model. The objective was to gain a better understanding of sea-breeze and deep convective interactions over the Florida peninsula using a high resolution convectively explicit model and to use these results to evaluate convective parameterization schemes. A 3-D numerical investigation of Florida convection was completed. The Kuo and Fritsch-Chappell parameterization schemes are summarized and evaluated

Ejaculate allocation by male sand martins, Riparia riparia

Males of many species allocate sperm to ejaculates strategically in response to variation in the risk and intensity of sperm competition. The notable exception is passerine birds, in which evidence for strategic allocation is absent. Here we report the results of a study testing for strategic ejaculate allocation in a passerine bird, the sand martin (Riparia riparia). Natural ejaculates were collected from males copulating with a model female. Ejaculates transferred in the presence of a rival male contained significantly more sperm than ejaculates transferred in the absence of a rival male. There was no evidence that this difference was due to the confounding effects of the year of ejaculate collection, the identity of the model female, the colony, the stage of season or the period of the day in which ejaculates were collected. A more detailed examination of the ejaculate patterns of individual males, achieved by the DNA profiling of ejaculates, provided additional evidence for strategic allocation of sperm

Plausible responses to the threat of rapid sea-level rise for the Thames Estuary

This paper considers the perceptions and responses of selected stakeholders to a scenarion of rapid rise in sea-level due to the collapse of the West Antarctic ice sheet, which could produce a global rise in sea-level of 5 to 6 metres. Through a process of dialogue involving one-to one interviews and a one-day policy exercise, we addressed influences on decision-making when information is uncertain and our ability to plan, prepare for and implement effective ways of coping with this extreme scenario. Through these interactions we hoped to uncover plausible responses to the scenario and identify potential weaknesses in our current flood management approaches to dealing with such an occurrence. By undertaking this exploratory exercise we hoped to find out whether this was a feasible way to deal with such a low probability but high consequence scenario. It was the process of finding a solution that interested us rather than the technical merits of one solution over another. We were not intending to produce definitive set of recommendations on how to respond but to gain insights into the process of making a decision, specifically what influences it and what assumptions are made.Sea level rise, London